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Minor earthquake, 3.3 mag was detected near Unalaska in Alaska



Earthquake location 53.4524S, -165.7522WA minor earthquake magnitude 3.3 (ml/mb) has occurred on Tuesday, 69 km SE of Unalaska, Alaska (43 miles). Global date and time of event UTC/GMT: 19/07/17 / 2017-07-19 02:59:45 / July 19, 2017 @ 2:59 am. The 3.3-magnitude earthquake has occurred at 15:59:45 / 3:59 pm (local time epicenter). Event ids that are associated to the earthquake: ak16353389, us2000a5uq. Id of event: us2000a5uq. Exact location of earthquake, longitude -165.7522 West, latitude 53.4524 North, depth = 35.76 km. The earthquake occurred at a depth of 35.76 km (22 miles).

In the past 24 hours, there have been four, in the last 10 days five, in the past 30 days seven and in the last 365 days one hundred and thirteen earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 2.5 to 3.5 are often felt, but only causes minor damage. Each year there are an estimated 130,000 minor quakes in the world.

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 69 km SE of Unalaska, Alaska.

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More information

Parameter Value Description
Magnitude 3.3 mb The magnitude for the event.
Longitude -165.7522° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 53.4524° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 35.76 km Depth of the event in kilometers.
Place 69km SE of Unalaska, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-07-19 02:59:45 Time when the event occurred. UTC/GMT
Updated 2017-08-09 01:22:13 Time when the event was most recently updated. UTC/GMT
Timezone offset -660 Timezone offset from UTC in minutes at the event epicenter.
Felt The total number of felt reports
CDI The maximum reported intensity for the event.
MMI The maximum estimated instrumental intensity for the event.
Alert Level The alert level from the PAGER earthquake impact scale. Green, Yellow, Orange or Red.
Review Status reviewed Indicates whether the event has been reviewed by a human.
Tsunami 0 This flag is set to "1" for large events in oceanic regions and "0" otherwise. The existence or value of this flag does not indicate if a tsunami actually did or will exist.
SIG 168 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network us The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,ak,us, A comma-separated list of network contributors.
Number of Stations Used The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.596 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.81 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 189 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type ml The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us2000a5uq Id of event.
Event Code 2000a5uq An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak16353389,us2000a5uq, A comma-separated list of event ids that are associated to an event.

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